Across
- 3. magnet- a material that retains its magnetic properties can attract or repel other magnets and can attract magnetic materials
- 5. drop-the difference in voltage across an electrical device that has current flowing through it
- 6. current law-states that all of the current entering a circuit branch must exit again
- 8. used to measure large amounts of power kilowatt equals 1000 watts
- 10. a material that can respond to forces from magnets
- 14. fault interrupt-an outlet with an automatic device that protects you against electric shock
- 15. - a device that converts kinetic energy into electrical energy using the law of induction
- 16. - unit used to measure power on watt equals one joule per second
- 18. current - electrical current that flows in one direction as with a battery
- 21. current-electrical current that reverses direction at repeated intervals as with household electricity
Down
- 1. the rotating disk of an electric motor or generator
- 2. Circuit-an electric circuit that has only one path for current
- 4. induction - the process of using a moving magnet to create a current
- 7. circuit- a branch in a circuit with zero or very low resistance
- 8. hours- a unit of energy to one kilowatt of power used for one hour , equals million joules
- 9. motor - a device that converts electrical energy into mechanical energy
- 10. declination- the difference between true north and the direction a compass points
- 11. a magnet created by a wire carrying electric current
- 12. device that switches the direction of electrical current the electromagnet of an electric motor
- 13. Power-the rate at which electrical energy is changed into other forms of energy
- 17. device with a thin wire that melts and breaks an overload circuit
- 19. Circuit-an electric circuit with more than one path or branch
- 20. breaker -an automatic device that trips like a switch to turn off an overload circuit